Door lock



Jun 2l, 1938*. F.. N. RoBERTsoN .DOOR LOCK Filed April 20, 1956 3Sheets-Sheet 1 I /NVE N TOR FEEDER/cx NOEL ROBERTS o/v www ATroRNEY ,Iu'ne 21, 1938. il". NQROBERTSON v 2,121,263.

DooR Lcx v FiledAprilzo, 1936 s sheets-sheet 3 N VEN TO R FREaEk/CK NOELRoERrsoN ATTORNEY Patented June 21, 1938 lUNITI-:D sTATss DOOR LOCKFrederick Noel Robertson, Vancouver, British Columbia, Canada`Application April zo, 1936, serial No. '15,377

' 5 Claims.

vide an operating handle for the outside of the' door which can berendered inoperative from within and can be made free to move in eitherdirection when rendered inoperative. Further objects are to provide alock which will permit the glass of a motor car'door toiextend close tothe door stile through which the latch bolt projects, and also toprovide a lock of rigid design which will be extremely cheap tomanufacture.

'I'he invention consists of a lock having a latch bolt, an outer andinner handle each capable of withdrawing the latch bolt, means operableby the inner handle for rendering the latch bolt inoperative by theouter handle,v said outer handle being mounted for' substantiallyhorizontal movement towards the striking plate of the lock to` Withdrawthe latch, as will be more fully described in the followingspecification and shown in the accompanying drawings,. in

Fig. 1 is a sectional view of the lock with the front cover plateremoved.

Fig. 2 is a plan view taken on the line 2--2 oi Figure 1.

Fig. 3 is a detail view of the stop mechanism applicable to the lockshown in Figures 1 and 2 to prevent free vmovement of the outer handlewhen said handle is rendered inoperative.

Fig. 4 is a sectional view of a modiiied form of the invention. y

Fig. 5 is a plan view taken on the line 5--5 of Figure 4. v

Fig. 6 is a transverse sectional view taken on the line 6--6 of Figure5.

Fig. 7 is a detail view showing the means for rendering the outer handleof the lock shown in Figures 4, 5 and 6 freely movable when the latchbolt is locked.

Fig. 8 is a sectional view showing the stops on the inside handle.

tween which is supported a glass guide channel 5 and a verticallymovable glass panel 6. The outer panel is provided with an opening 1through which access is obtained to operate the door lock generallyindicated by the numeral 8. 5 The lock 3 is provided with outer andinner plates 9 and IIJ respectively, which journal between them ahorizontal shaitor spindle II. A guide I2 is formed on the plate Ill inwhich a latch bolt I3 is slidably movable. The latch bolt 10 I3 is urgedin an outward direction by a spring I4 and is provided with two inwardlyextending pins I5 and IG. e

The usual inner handle I1, shown in chain dottedvline in Figure 8, isfitted to the inner panel 15 l -3 and is provided with a spindle I8, acrank disc I9 notched as at 20 to receive a spring stop 2| when moved tonormal and locked positions. Connected to the crank disc I9 is a bar22provided with a slot 23 at its outer end through 2o which the pin I5on the latch bolt extends. The outer end of the bar 22 is inwardlyturned to form an abutment 24. A light spring 25 ex-v tends between theinner end of the latch bolt I3 and the outer end 4of the bar 22 to holdthe outer 25 end of the slot 23 in contact with the pin I5, so that 4adownward movement of the inner handle I1 from normal position will causethe bar 22 to move inwardly and retract the bolt.

Mounted upon the spindle I I is a iinger 26 pro- 30 vided with twoabutments or points of thrust which are respectively numbered 21 and 28,the abutment v21 being adapted to engage the pin II;V and the4 abutment23 being adapted to be engaged by. the abutment 24 of the bar 22. 35

An outer handle 29, having a horizontal bar 30,` is swingingly mountedupon pivot pins 3I and 32 from arms 33 and 34, which are pivotallyconnected from the outer plate 9, so as to provide an endwise movementof the handle to'- 40 wards the stile 4 to open the lock. This handle ismounted at the marginal edgeof the opening 1 so .that to engage it thefingers are inserted through the opening and the handle is moved behindthe outer lock plate 9. 45 Swingingly mounted from the pin 3l is a push'rod 35 which is downwardly urged by a springv36, shown in dotted line inFigure l. This spring is passedv around the pin 32 and up to engage thearm 34, thus serving also to urge the handle 29 50 back to normalposition as shown. The free end of the push rod 35 is cut away on itslower edge to provide an abutment 31 and an overlying tongue 38.

Secured adjacent the outer end of the spindle u 'when the L-shaped leverIIisswungbeyoudnor-v mal positionin a clockwise direction as shown in idotted-lineasatll,andwhensoraised.the handle is tree to be moved withoutoperating the latch bolt as the abutment 31 will'be raised above the lug4I. Mounted in the outer side oi the lock is a lock cylinder 42 havingacam 43, shown in dotted line in Figure i, which on being turned tolocking position raises the rod 3l out oi engagement with the lug 4l, asshown in dotted line as at N. Should it be desired to prevent freemovement of the handle 2l when the operative connection between saidhandle and the L-shapedlever 3l is broken, a

projection 44 is iorm'ed upon the upper edge ot the push rod 3i. asshown in Figure 3, which is provided with a back stop 4l both of whichengage a lug 4I extending inwardly from the outer lock plate s when thepush rod sl is raised either f by movement oi the inner handle or theturning o! the cam 43 of the lock cylinder 42 to raised position.

m the modmoetiooohown in mures ifsji and y'1 the loten boit is isslotted ooioeent its inner end as at ll and the bar 22 operated -by theinner handle is provided with a pin Il passing therethrough. The freeend of the bar 22 is provided with a lug l2 which projects below thelatch and is adapted to engage, when being moved towards. the stile 4oi' the door.' the yupper end i3 of a bell crank I4. This bell crank ispivoted upon the inner plate il oi the lock and has a horizontal leg IIwhich is adapted to engage one end oi' a rocking lever il, seeparticularly Figure 6. The rocking lever Il is provided adjacent theouter side oi' the lock with a horizontal member i1 which on beingraised is interposed between .the 'lower end oi' the arm 34 and thestile 4 to prevent said arm from swinging. v

The look oylinder n in this modification is,

disposed immediately below the horizontal member I1, so that on beingturned to locking position the lock cam 43 raises the horizontal meinberin the same manner as the rocking of the bell crank 54.

- when it is desired to make the handle :s freely movable and at thesame time inoperative to retraot thenteh boit .the horizontal bef al ofthe handle is provided with a horizontal slot 53, shown in dotted linein Figure 4, through which the pivot pin 32, which is carried by the arm34. extends. t v

Pivotally mounted upon the pivot pin 3l is a link Il urged downwardly bya lightV spring 80 and having a slot 6I extending horizontally andterminating with a vertical oilset B2 in which the pivot pin 32 normallyis engaged. 'Ihe horizontal member 51 is provided with a lug 63 whichprojects under the free end of the link 5I, so that when said link israised by the rocking lever 58 the slot BI of the link and the slot ilof the horiaantal bar 30 of the handle are brought into register witheach other, so that the pin 32 and its arm 34 are held against movementand the handle and its horizontal bar 3l are free to move endwiseagainst a spring 84 without rocking the spindle l I. The upper l nd ofthe bell crank 54 is held in engagement with th;- lug 52 by a lightspring Il. f

Where it is preferred to use a push button, on tbesilloithe doortorrenderingtheoutcr handle inoperative, the inner handle I1 is arrangedto move to withdraw the Alatch bolt I3 and to have no locking function.1 l In the modified locking means shown in Figure 9 a bell crank Il ismounted upon a pivot pin l1.

The bell crank is provided at its lower extremity with a lug 03 and isconnected at the free-end ci its horizontal leg Il witha push rod 1lprojecting through the door sill 1| and fitted with a button '12. Ihepush rod is provided with lower and upper grooves 13 and 14 which areadapted to'be engaged by a suitable spring stop 1l. When the button 12is in raised position as shown, the outer handle is operative and when"the button' is pressed downwardly to cause the spring stop 15 to engagethe upper groove 14 the lug I3 will engage the nnger ,2l and rock theshaft i I in a clockwise direction to the limit of its stroke.

. In the modiiied locking means shown in Figure 10 the push rod 'Ilconnects with a lever "which in turn is connected at its free endthrough a. hooked member 11 to the free end oi the rochng lever Il sothat as the button 12 is pressed downwardly to the limit of its stroke,the rocking lever Il is movedto dispose its horizontal member i1 betweenthe lower end of the arm 34 and prevent said arm from being so swungtowards the stile 4 oi the door.

In operating the lock as shownin Figures l, 2 and 8 from the inside theinner handle is pressed down in the usual way, which pulls the bar 22rearwardly and through the pin i5 retractsthe latch bolt I3 against'thethrust oi' the spring I4.

When the inner handle is raised above its normal position the bar 22 isthrust forwardly, its abutment 24 engaging the abutment 23 of the linger2t, thus rocking spindle il in a clockwise direction and raising theL'.shaped lever 39 so that the push rod 3l is raised out of engagementwith the lug 31 of the lever 33, hence the outer handle 23 may be movedtowards the free edge of the door without operating the latch. When thelock cylinder 42 is turned to raise its cam 43, the push rod 3i islikewise raised, so that the movement of the handle 2l will not operatethelatch bolt I3. 'Ihe disengagement between the push rod 35 and theL-shaped lever 33 is identical whether eifected by the inner handle orthe lock cylinder.

Where the push rod 35 is provided with a stop 4l as shown' in Figure 3,the push rod when raised,

either by the-lock cylinder movement or from the upward movement of theinner handle, will be out oi engagement with the L-shaped'lever 39, butthe stop 4l being brought into engagement with the lug 4i will preventthe outer handle 29 from being moved. When the outer handle is not ininoperative position its movement towards the free edge of the doorcauses the push rod 35 to engage the lug 31 of the L-shaped lever 39 androck the spindle i I in an anti-clockwise direction, thus swinging theringer 26 to bear upon the pin I6 and thrust the latch bolt I3rearwardly to retract it from engaging position.

In the operation of the lock as shown in Figures 4, 5, 6 and '7 the dooris opened from the outside by moving the outer handle 20 in a similarmanner to that above described. If the lock cylinder 42 is turned todispose its cam 43 upwardly the rocking lever i0 is tipped, raising itshorizontal member 51 to prevent the swinging movement of the arm 34 andto lift the link 5l that the outer handle may have free and inoperativemovement. The operation of the inner handle is also as previouslydescribed, but on being raised above normal position it causes the bar22 to moveiorwardlytoxockthebell crankl4andtip the rocking lever 5E tostop the swinging movement of the arm 34, so that again the outer handleis rendered inoperative.

It will be preferred that neither of the button locking means shown inFigures 9 and 10 be used on the doors which are fitted with key lockingmeans. .On the door locks where key means are not employed the generalfunction of the several parts will remain unchanged except that theinner handle will not -be used necessarily for the purpose of renderingthe outer handle inoperative.

What I claim as my invention is:

1. A door lock having a latch bolt, an outer and an inner handle forretractlng the latch bolt, a rock shaft having a ingeradapted to engagethe latch bolt and a lever, a push rod carried by the outer handlevadapted to normally abut the lever, and means for preventing the pushrod from abutting the lever whereby the outer handle is renderedinoperative.

2. A door lock having a latch bolt, an outer and ani inner handle forretracting the latch bolt, a rock shaft having a inger adapted to engagethe latch bolt and a lever, a push rod carried by the outer handleadapted to normally abut the lever, and .means for raising the push rodout of abutting contact with the lever whereby the outer handle isrendered inoperative.

3. A door lock having a latch bolt, an outer and an inner handle forretracting said -latch bolt, a spindle :operatively connecting the outerhandle to the latch bolt. and means as the inner lhandle is turned in anabnormal direction for disrupting the connection vbetween the outerhandle and the spindle and for preventing the movement of the outerhandle.

4. A door lock having a latchbolt, a spindle,

a linger extending from the spindle adapted to the connection betweenthe outer handle and said spindle.v

5. A door lock having a plate, a spindle rockingly mounted transverselyto the plate, a latch bolt adapted for retraction in response to theVrocking of the spindle, a pair oilr arms-swingingly mounted from theplate, a handle supported froml the free ends of the arms, and meansnormally connecting the handle with splndle'- to rock it.

-NoEL RoBER'rsoN.

